Refraction astronomical telescope double objective lens set 154mm DIY self-made






Suitable for primary lens diameter: 100-200mm
Astronomical telescope optical system: refraction
Lens Diameter: 154mm, 
Effective diameter: 150mm
Attention: 2pcs lens makes a objective lens group.
Package includes: 2pcs lens per quantity

objective lens D=154mm F=750mm singlelayer blue film
diameter 154mm
focal length 750mm
Coating Four-sided singlelayer blue film
Combined image quality 1/4-1/8
Diameter tolerance +0/-0.12 mm
Center thickness tolerance ±0.2mm
Focal length tolerance ±0.1%
Finish 60/40
eccentric 1'




objective lens D=154mm F=750mm multilayer green film
diameter 154mm
focal length 750mm
Coating Four-sided multilayer broadband film (400-700nm)
Combined image quality 1/4-1/8
Diameter tolerance +0/-0.12 mm
Center thickness tolerance ±0.2mm
Focal length tolerance ±0.1%
Finish 60/40
eccentric 1'




objective lens D=154mm F=1200mm singlelayer blue film
diameter 154mm
focal length 1200mm
Coating Four-sided singlelayer blue film
Combined image quality 1/4-1/8
Diameter tolerance +0/-0.12 mm
Center thickness tolerance ±0.2mm
Focal length tolerance ±0.1%
Finish 60/40
eccentric 1'




objective lens D=154mm F=12000mm multilayer green film
diameter 154mm
focal length 1200mm
Coating Four-sided multilayer broadband film (400-700nm)
Combined image quality 1/4-1/8
Diameter tolerance +0/-0.12 mm
Center thickness tolerance ±0.2mm
Focal length tolerance ±0.1%
Finish 60/40
eccentric 1'

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